4-?Methyl-?2,?3-?dihydro-?1H-?1,?5-?benzodiazepin-?2-?one is used in the preparation of benzodiazepine pharmacophores, including s-triazine derivatives which display medicinal interest. Also an impurity of Filbanserin (F336750), an agonist of serotonin-5HT1A receptor and an antagonist of the 5-HT2A receptor. Binds dopamine receptors with Ki values ranging from 4-24 nM. Used to treat hypoactive sexual desire disorder in females.